Question

mention any four properties of metals

Answer 1

Metals are a good conductor of electricity which means that they can conduct electricity due to the free moving electrons present in them. Copper is used as wiring as it is a good conductor of electricity.

Metals have high melting points and high boiling points as they have strong metallic bonds.

All metals are physically lustrous. They have a lustre that makes them shine. Gold is used for making jewellery.

Metals are hard, they can’t be broken easily and require a lot of energy and strength to break. Iron is used to make cars, buildings, ships, etc.

Metals weigh a lot as they have a high density. Metals are heavy for their size.

They don’t have flexibility and have tensile strength. Metals can’t be stretched.

Answer 2

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High malleability - eg. Forging or rolling

Elastic and plastic deformation

High fracture toughness above the Brittle-Ductile transition temperature

High electrical conductivity

Most metals reflect light of all wavelengths equally well so look white or nearly so and shiny

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